Single Flame Atomic Absorption Spectrophotometer

Model

AS2000

Wavelength Range

190～900nm

Grating Line Density

1800 lines /mm

Absorbance Range

0–2.5ABS

Wavelength Repeatability

±0.1nm

Wavelength Accuracy

Full spectrum ±0.2 nm

Optical System

Integrated optical platform, fully enclosed optical system (single beam)

Detector

Photomultiplier tube

Resolution

Able to separate manganese doublet lines (279.5 and 279.8 nm) with a spectral bandwidth of 0.2 nm and a valley-to-peak energy ratio of <30%

Spectral Slits

0.1nm,0.2nm,0.4nm,1nm,1.2nm.2.0nm（automatically switchable）

Background Correction Technology

D2 background subtraction (background signal 1 ABS, background reduction capability ≥50 times)

Static Baseline Drift

≤0.004ABS/30min（ Cu）

Lamp Holder

4-lamp turret

Characteristic Concentration （Copper）

≤0.025ug/ml

Measurement Repeatability（Copper）

≤0.5%（Cu，Absorbance＞0.8ABS）

Detection Limit

Cd ≤0.3pg

Gas Flow Control

Needle valve control

Safety Protection

Automatic gas cut-off for low pressure, power interruption, abnormal flameout, and burner mismatch;

Background Subtraction Method

Self-absorption and deuterium lamp background subtraction methods，can correct 1A background. When the background signal is 1A, the background deduction ability is ≥50 times

Burner

Air-acetylene flame burner 100mm

Ignition Method

Automatic ignition

Ignition Dynamic Baseline Drift

≤0.004ABS/30min(Cu)

Dimensions

700*500*530(mm)

Weight

80kg